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  Multiple phoretic mechanisms in the self-propulsion of a Pt-insulator Janus swimmer

Ibrahim, Y., Golestanian, R., & Liverpool, T. B. (2017). Multiple phoretic mechanisms in the self-propulsion of a Pt-insulator Janus swimmer. Journal of Fluid Mechanics, 828, 318-352. doi:10.1017/jfm.2017.502.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-ADE4-B Version Permalink: http://hdl.handle.net/21.11116/0000-0001-ADE5-A
Genre: Journal Article

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Ibrahim, Y., Author
Golestanian, R.1, Author              
Liverpool, T. B., Author
Affiliations:
1Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2570692              

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 Abstract: We present a detailed theoretical study which demonstrates that electrokinetic effects can also play a role in the motion of metallic-insulator spherical Janus particles. Essential to our analysis is the identification of the fact that the reaction rates depend on Pt-coating thickness and that the thickness of coating varies from pole to equator of the coated hemisphere. We find that their motion is due to a combination of neutral and ionic-diffusiophoretic as well as electrophoretic effects whose interplay can be changed by varying the ionic properties of the fluid. This has great potential significance for optimizing performance of designed synthetic swimmers. © 2017 Cambridge University Press.

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Language(s): eng - English
 Dates: 2017-09-042017-10-10
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1017/jfm.2017.502
BibTex Citekey: Ibrahim2017
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Title: Journal of Fluid Mechanics
Source Genre: Journal
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Pages: - Volume / Issue: 828 Sequence Number: - Start / End Page: 318 - 352 Identifier: -